Firstly: It is ordained that the Medal shall be designated “The Efficiency Medal”.

Secondly: It is ordained that the Medal shall be of silver, oval in shape and shall bear in relief on the obverse the Royal and Imperial Effigy and on the reverse the inscription “For Efficient Service”.

Thirdly: It is ordained that the Medal shall be worn suspended on the left breast by a green ribbon one inch and a quarter in width with yellow stripes down the edges.

Fourthly: It is ordained that the Medal shall in all cases bear a subsidiary title to denote whether at the time the recipient qualified for the award of the Medal he was serving in Our Militia or in Our Territorial Army or in one of the other Auxiliary Military Forces of Our Empire; such subsidiary title being specified in the regulations hereinafter mentioned and inscribed on the mount of the Medal.

Fifthly: It is ordained that the Medal shall be awarded to warrant officers, non-commissioned officers and men who complete 12 years' efficient service on the active list of Our Militia, of Our Territorial Army or of the other Auxiliary Military Forces of Our Empire; and who are recommended by the Commanding Officer of the unit in which the period of service requisite to qualify for the Medal is completed and who are certified by the responsible military authorities as deserving of the Medal.

Sixthly: It is ordained that a Clasp to be worn on the ribbon of the Medal shall be awarded to warrant officers, non-commissioned officers and men who, having been awarded the Medal, complete a total of 18 years' efficient service as aforesaid, and a further Clasp shall be awarded to those who complete 24 years' efficient service as aforesaid.

Seventhly: It is ordained that service in West Africa (except that performed by natives of West Africa) shall reckon two-fold as qualifying service for the Medal or Clasps, but any period spent on leave therefrom shall reckon only as single qualifying service.

Eighthly: It is ordained that such war service as may be defined from time to time in the regulations hereinafter mentioned shall reckon two-fold as qualifying service, or as single qualifying service, towards the period of service required for the award of the Medal or Clasps; and that war service not so defined shall not reckon as qualifying service; Provided that nothing in this Our Warrant shall permit service to reckon more than two-fold as qualifying service for the Medal or Clasp.

Ninthly: It is ordained that such service rendered in the ranks of a Cadet Force as may be defined in the regulations hereinafter mentioned shall count as qualifying service for the Medal or Clasps.

Tenthly: It is ordained that service on the permanent staff of any of the aforesaid forces by members of the permanent forces of Our Empire or territories under Our protection or service in a Reserve or Auxiliary force involving a liability for service only and no liability for training in peace, shall not reckon as qualifying service for the Medal or Clasps.

Eleventhly: It is ordained that the service requisite to qualify for the Medal or Clasps shall be continuous service except in special circumstances and all such exceptions shall be defined in the regulations hereinafter mentioned, provided, nevertheless, that where service is rendered in more than 1 of the aforesaid forces, such forces not being in the same portion of Our Empire, or territories under Our protection, an interval not exceeding 12 months between any 2 periods of service, shall not be regarded as breaking the continuity of such service.

Twelfthly: It is ordained that such service in the authorized Naval or Air Auxiliary or Volunteer Forces of Our Empire or territories under Our protection as may be defined in the regulations hereinafter mentioned shall count as qualifying service for the Medal or Clasps.

Thirteenthly: It is ordained that an officer of the aforesaid forces who has in virtue of service in the ranks thereof been awarded the Medal or Clasps shall, if The Efficiency Decoration be subsequently conferred upon him, not be called upon to surrender the Medal or Clasps, but shall not be permitted to wear them until such time as he has completed the full periods of qualifying service in respect of both the Decoration and the Medal or Clasps.

Fourteenthly: It is ordained that any service reckoned as qualifying service for the grant of any Long Service, Good Conduct or Efficiency Medal (or Clasp) which may have been awarded to a member of Our Militia, Our Territorial Army or of the other authorised Auxiliary Military Forces of our Empire as aforesaid shall not reckon as qualifying service for The Efficiency Medal or Clasps albeit that the recipient of any of the above mentioned Medals (or Clasps) may be permitted to wear them with the Efficiency Medal (with or without Clasps), provided that he has completed the full periods of qualifying service in respect of each Medal or Clasp.

Fifteenthly: It is ordained that it shall be competent for Our Army Council in regard to Our Militia and Our Territorial Army, or for the Governors-General, Governors or Officers administering the Government, as the case may be, in regard to the Auxiliary Military Forces of Our respective Dominions, Colonies, or territories under Our Protection, or for Our Viceroy in regard to the Auxiliary Military Forces in India, to cancel and annul the award of the Medal to any person and also to restore a forfeited Medal, under the conditions laid down in the regulations hereinafter mentioned.

Sixteenthly: It is ordained that the Medal shall be awarded under such regulations as to grant, forfeiture, restoration and other matters, in amplification of these Our rules and ordinances as may, with Our approval signified through one of Our Principal Secretaries of State, be issued from time to time by Our Army Council in regard to Our Militia and our Territorial Army, or by the Governors-General, Governors or Officers administering the Government as the case may be, in regard to the Auxiliary Military Forces of Our respective Dominions, Colonies, or territories under Our protection, or by Our Viceroy in regard to the Auxiliary Military Forces in India.

Lastly: We reserve to Ourself, Our Heirs and Successors, full power of annulling, altering, abrogating, augmenting, interpreting or dispensing with these rules and ordinances, or any part thereof, by a notification under Our Sign Manual.

George the Sixth, by the Grace of God, of Great Britain, Ireland and the British Dominions beyond the Seas, King, Defender of the Faith, Emperor of India, to all to whom these Presents shall come, Greeting!

Whereas His late Majesty King George V, by a Warrant under His Royal Sign Manual dated 23 September 1930, was pleased to make, ordain and establish rules and ordinances for the governance of The Efficiency Medal, reserving to Himself, His Heirs and Successors full power of annulling, altering, abrogating, augmenting, interpreting, or dispensing with those rules and ordinances, or any part thereof, by a notification under Royal Sign Manual;

And Whereas on 1 April 1937 Burma ceased to be part of India;

Now Therefore We do by these Presents for Us, Our Heirs and Successors ordain and appoint that the words “or for the Governor in regard to the Auxiliary Military Forces in Burma,” shall be inserted after the words, “or for Our Viceroy in regard to the Auxiliary Military Forces in India” in the Fifteenth Clause, and that the words, “or by the Governor in regard to the Auxiliary Military Forces in Burma” shall be inserted after the words “or by Our Viceroy in regard to the Auxiliary Military Forces in India” in the Sixteenth Clause of the said Warrant.

George the Sixth, by the Grace of God, of Great Britain, Ireland and the British Dominions beyond the Seas, King, Defender of the Faith, Emperor of India, to all to whom these Presents shall come, Greeting!

Whereas His late Majesty King George V, by a Warrant under His Sign Manual dated 23 September 1930, was pleased to make, ordain and establish rules and ordinances for the governance of The Efficiency Medal, reserving to Himself, His Heirs and Successors full power of annulling, altering, abrogating, augmenting, interpreting or dispensing with those rules and ordinances, or any part thereof, by a notification under Royal Sign Manual;

And Whereas We are desirous of providing for the award of additional Clasps for each period of 6 year's efficient service after the award of the first Clasp to be worn on the ribbon of the medal;

Now Therefore We do by these Presents for Us, Our Heirs and Successors, ordain and appoint that the Sixth Clause of the said Warrant shall be amended by the substitution of the words “for each additional completed period of 6 years' efficient service as aforesaid” for the words “to those who complete 24 years' efficient service as aforesaid”.

George the Sixth, by the Grace of God, of Great Britain, Ireland and the British Dominions beyond the Seas, King, Defender of the Faith, Emperor of India, to all to whom these Presents shall come, Greeting!

Whereas His late Majesty King George V, by a Warrant under His Sign Manual dated 23 September 1930, was pleased to make, ordain and establish rules and ordinances for the governance of The Efficiency Medal, reserving to Himself, His Heirs and Successors full power of annulling, altering, abrogating, augmenting, interpreting or dispensing with those rules and ordinances, or any part thereof, by a notification under Royal Sign Manual;

And Whereas We are desirous of providing for the award of The Efficiency Medal to auxiliaries of Our Auxiliary Territorial Service;

Now Therefore We do by these Presents for Us, Our Heirs and Successors, ordain and appoint that the following words be added to the Fifth article of the said Warrant:

George The Sixth by the Grace of God, of Great Britain, Ireland and the British Dominions beyond the Seas, King, Defender of the Faith, Emperor of India, to all to whom these Presents shall come, Greeting!

Whereas His late Majesty King George V, by a Warrant under His Sign Manual dated 23 September 1930, was pleased to make, ordain and establish rules and ordinances for the governance of The Efficiency Medal, reserving to Himself, His Heirs and Successors full power of annulling, altering, abrogating, augmenting, interpreting or dispensing with those rules and ordinances, or any part thereof, by a notification under Royal Sign Manual;

And Whereas We deem it expedient to make further provision regarding the conditions under which The Efficiency Medal and Clasps shall be awarded:

Our Will And Pleasure Is that officers who are serving or who have served as such on the active list of any of our Armed Forces during the present Emergency and who were, on 2 September 1939, serving as officers, warrant officers, non-commissioned officers, men, or auxiliaries, on the active list of Our Territorial Army or of Our Auxiliary Territorial Service, or of any Auxiliary Military Forces raised in Our Indian Empire, Burma, any of Our Colonies, any Territory under Our Protection, or in any other part of Our Dominions Our Government whereof shall so desire, or in any Territory under our Protection administered by Us in such Government, and were embodied or called up for service, shall, until Our Further Will and Pleasure be made known, and subject in other respects to the conditions laid down in the Warrant of 23 September 1930 (as subsequently amended), be eligible for the award of The Efficiency Medal and Clasps, and be allowed to reckon their service as officers as qualifying service for the Medal and Clasps, except that officers who before 2 September 1939 had qualified for the award of The Efficiency Decoration shall not be eligible for the Medal and Clasps unless they are qualified under the terms of the Warrant of 23 September 1930.

Our Further Will And Pleasure Is that officers as aforesaid, who were serving as warrant officers, non-commissioned officers or men of Our Supplementary Reserve, Category A or B, on 2 September 1939, and who were embodied or called up for service in accordance with Army Order 158 of 1939 shall until Our Further Will and Pleasure be made known, and subject in other respects to the conditions laid down in the Warrant of 23 September 1930, be eligible for The Efficiency Medal and Clasps and be allowed to reckon their service as officers as qualifying service therefor.

Our Further Will And Pleasure is that any person who under the terms of this Our Warrant receives an Efficiency Medal or Clasps and is or subsequently becomes entitled to an Efficiency Decoration shall not be permitted to wear such medal or clasps with The Efficiency Decoration, except under the conditions laid down in the Warrant of 23 September 1930.